Mining machine



March 27, 1928.

C. F. OSGOOD MINING MACHINE Original Filed July 6, 1925 2 Sheets-Sheet 1S QQ @nu Q QOUROU March 27, 1928. 1,664,387

c. F. osGooD MINING .MACHINE Original Filed July 6, 1925 2 Sheets-Sheet2 Eig- 15206712371' /aa/'Zed'lf 049006Z vSEIS Patented Mar. 27, 1928.

UNITED STATES PATENT OFFICE.

CHARLES F. OSGOOD, OF CLAREMONT, HAMPSHIRE, ASSIGrNORV TO SULLIVANMACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

- MINING MACHTNE.

Application -1ed .Tuly 6,1925, Serial No. 41,759. Renewed Aug-ust 25,1927.

' My invention relates to mining machines and more particularly tofeeding mechanism for a'mining machineV of the continuous cutter lowvein type adapted to use with either the longwall or room and Apillar'system of'mining. Y L

A. main object of my invention vis toprovide an improved continuousVcutter low vein type mining machine having improved feeding meansespecially adapted to use'with either the long wall or room and pillarsystem of mining. Another object of my invention is to provide animproved mining machine of vextremely low and compact characterespecially adapted to use in mines having narrow veins of coal. Stillanother object of my invention is to provide a mini ing machine of thelow vein type, wherein the height of the driving motor substantiallydetermines the height of the machine, having a power driven feedoperating member and a power driven controlling or take upv member. Astill further object of my invention is to provide a mining machine ofthe combined room and pillar and longwall low vein type havinganimproved arrangement of controlling and feeding yparts whereby themovement of the machine dur ing cutting in either system of mining isgreatly facilitated. Yet another vobject of my invention is to provide,an improved mining machine of the low vein invertible type adapted touse as either an undercutter or an overcutter. These and other objectsof my invention will, how-ever, hereinafter more fully appear. i Y

In the preferred form of my invention the objects stated are achieved byproviding a mining machine of the combined longwall and room and pillarcontinuous cutter low vein type having a plurality of power driven ropedrums, one of which is for feeding the machine relatively to the coalface while the other is operative for controlling the posit-ion of themachine relative to the coal face, .these drums being arranged in anovel location and driven fromthe driving motor in an improved manner.More specilically, a preferred embodiment of the invention may comprisean invertible machine frame slidable on either of two opposed surfacesAon the mine bottom and preferably formed ef a feed section, a central'motor section, and acutter section, the latter having a projectingcutter bar which ispivot` ally mounted thereon and adaptedto be,

loclzed in a plurality of operative positions 'relative thereto. Ypreferably comprises a plurality of winding drums disposed on parallellongitudinally extending axes at one end ofthe machine frame and thesedrums are driven atl either a fast or a slow speed and at anydesiredvariants of such speeds under the control of a plurality offriction clutches. The'. drums may be lconnected to the terminal elementof the feed transmission by means of separate friction clutches.Flexiblefeed cables may be attached to and wound upon the drums. In theaccompa'nyingdrawings, in which an illustrative embodiment vof theinvention is shown,`

Fig. l is a view primarily in plan with parts broken away.

Figj2 is an elevation of the end'of the machine remote from the cuttingmechanism.

The-feeding mechanism ors Fig. 3 is a central longitudinal verticalsection on line 3-3 of Fig. 2 through the v feeding mechanism, withpartsshown inV elevation.

Fig. 4 is a longitudinal vertical section on the line 4'4 of Fig.- 2.y

Fig. 5 is af'fragmentary transverse verticaljsection on' the line 5-5 ofFig. 3.

In the illustrative construction I have shown my invention embodied inan electricmotor driven, flexibly fed mining machine whichl is adaptedto cut either according to the room and pillar or the longwall systemand which is adapted to slide upon its" bottom 1 or its top 2 to inserta kerf either substantially at thelevel of the mine bottom or 'asubstantial distance above the bottom. The machine comprises a framegenerally designated 3 from which at one end a cutter bar 4 providedwith cutting elements 5 circulating in a closed orbit extends, the bar 4being pivotally mounted upon the end of the. machine and adapted to lbeheld in dierent positions with respect thereto by locking means 6. Asillustrated, the bar may be held either in a position eX- tendinglongitudinally of the machine frame 3 or at right angles to the frameand atV either side thereof. In order to permit cutting accerdng to theroom and pillar method, a

guide sheave 7 having a mounting 8 Whereby it may be bolted to themachine frame is provided adjacent the front end of the latter and thismounting can be shifted from side to side of the machine frame,depending upon the direction of cut desired. Feeding of the machine maybel accomplished by either of two flexible feeding elements 9 or 10 eachWound upon a feed operating member herein in the form of winding drums,the latter being respectively designated 11 and 12. During longwallcutting the feed operatingmember and flexible feeding inember neXtto theface may preferably be employed, While during room and pillar cuttingthe feed operating member and the flexible feeding member at theadvancing sideof the machine maybe used to effect feed, While the otherfeed operating member and flexible feeding member will he used tolcontrol the angular position of the machineY relative to the coal face.

i 'Referring more particularly7 to the machine, it Will be noted thatthe same herein comprises three sections, a motorv section 15, a. feedysection16 and a cutter carrying section 17,the feed and cutter mechanismcarrying sections being herein disposed at opposite ends of the motorsection and rigidly connected to the latter at points above the bottomof thevsections in such manner as to form a rigid and very low frameslidy able on the mine bottom. lt Will be particularly notedl thatherein the upper and lower surfaces ofthe three sections 15, 16 and 17are preferably disposed in common planes in such manner as to unite toform a single shoe adapted to permit free movement of the vmachinethereon over'the mine bottom. The operative connections between thecutting mechanism and themotor 18 arranged Within the motor section maybev of any suitable type-and require no detailed illustration since theymay follovvthe general construction illustrated in the copendingaipplication of Morris, P. Holmes, Serial No. 619,839. filed Feb. 19,1923-vvith appropriate modifications in view of the reversible characterofthe electric motor, or may take the form of the driving connectionsillustrated in the-patent to Levin, 1,895,647, or any other suitableform.

The feeding mechanism is actuated by the end of the vmotor 18' remotefrom the cutting mechanism, said motor having an armature shaft 19 whichcarries at one end a driving pinion 20. This pinion is adapted. toeffect actuation through suitable fast and slow speed gearing of thefeed operating membersll and 12. First considering the fast feedmechanism more specifically, itvvill be noted that the pinion .20 mesheswith a larger spur gear 32 suitably carried in a chamber Slandv mountedupon a shaft 34 which is journaled in suitable bearings 35. The gear 32is in turn rigidly connected as by keying to a driving pinion 36disposed coaxially therewith. As illustrated, the pinion 36 is meshedwith a larger internal gear 37 having a hub 38 herein journaled on asuitable Vbearing sleeve 39, the sleeve being mounted on a clutchVmember 40 keyed, as at 41, to a` longitudinally disposed main feeddriving or transmission shaft 42 journaled at its 0pposite ends inysuitable bearings 43 and 44 carried Within the feed frame section.Moreover, itvvill be noted-that ythe member 40v carries a series offriction disks 45Which are interleaved with a corresponding series ofdisks 46 carried by a sleeve'on the internal gear 37. As shown, thesleeve on the internal gear 37 is also providedvvith a plurality ofradially located longitudinally extending slots 47 receiving radialfingers 48 formed on an interlocking. member 49 keyed to the hub of apinion 50, thelatter being freely rotatable on the shaft 42. Betweenthese fingers 48 are friction clutch operating fingers 51 carried byavcylindrical` member 52 disposed coaxially With the hub of the gear 50.These fingers 51v extend longitudinally into contact withV one set ofthe friction disks 45, 46. As shown, the outer end of the shaft 42 hassuitably secured thereto av spur pinion 53 which meshes Withpla-neportion 61 disposed coaxially with the main transmission shaft42vand adjacent one end thereof. The shaft 61v has secured thereto as by akey 62, aspur pinion 63 herein forming the terminal element of the fastandslow feed transmission means which drives 'the feed operating membersor drums 11 and 12 in an improved manner to be hereinafterV described.It will thus be noted ,thatl the rotation of the armature shaft 19 maybe transmitted through the improved fast speed mechanism to the terminalpinion 63-to'drive the latter at a predetermined high or fast speed`Whenever the clutch controlling member 52 is operated'to engage theclutch disks 45, 46. It Will further be evident that such speed may bellovveredat will by slipping the friction disks 45, 46.

Refer-ring now specifically to the slow or cutting feed it will hereinbe observed that when the clutch controlling member 52 is inoperativeand the clutch is released, power Will still be transmitted through theinter.- locking member 49 to the pinion 50 which is leo freelyrotatablev on the shaft 42.'k This pinion in turn meshes with a spurgear 64 disposed coaXially with'the gear 32 and this gear has securedthereto and rotatable therewith a spurpinion 65 which meshes with avlarge internal gear' 66 disposed coaxially `nal"larger 'gear 71substantially similar to the'internal gear 37 and disposed coaXiallytherewith. AsV illustrated, the internal gear 7l'also `houses a frictionclutch substantially similar to the clutch heretofore described inconnection 'with the clutch disks 45, 46

.and this clutch includes interleaved clutch disks' 72 and 7 3,- certainof' which are carried on a clutch member 74 keyed, as at 75, to theshaft-.42 while others are carried by the sleeve formedintegral 'withthe' internal gear .71.' Moreover, a clutchY retaining member 7 6" isv-`provided suitably secured to a spacing member 77 interposed betweenthe bearing V44 and the clutch sleeve: 74 and this retaining member 76Vmaintains the clutch disks'72, 73 'in proper position. It will i4herein be Vnoted that this retainingmember V74 issimilar to the member-49, but in this instance has no interlocking function and is "only adisk ,retaining member. A cylindrical clutch operating member 7 8surrounds thehubl of the member y7 6 and is provided with longitudinallyextending lingers 79 vn rhichengage certain of the friction disks7 2,

73. As a result of this mechanism above described, although the clutch45, 46 is disconnected, rotation will constantly bev imparted throughthis slow feed mechanism so that when the clutch 72, 7 3A is connectedthe terminal vgear 63 will be rotated at a slow or cutting speed in thesame direction as the high or fast speed. Hereimjit will alsov beevident that by slipping the frictiondisks 72, 73 this speed may alsobe` reduced when desired. It will herein also be notedY that "suitable,'operating mechanism is provided forthe clutch actuating members 52 and78, which includes an operating member'or handle 80 disposedat the feedend' of the machine. Through suitable. manipulation of this handle thefast and slow speed clutches may be selectively applied. Any suitablevmechanism may 'be employed between the handle and the clutch loadingpinion 63 ofthe fastv and slow speed transmission means arev larger spurgears 81 and 82 which are respectively secured as by keys '83 toparallel-longitudinally extendingv hori Zontal shafts 84`disposed`parallel with and at opposite sides of the shaft 42 (see Fig. 4). Eachof these shafts is journaled within bearings 85 carried by a detachableframe section 86 forming a portion of the feed section 16. As theoperative connections between the shafts 84 and the'drums 11 andy 12,respectively, are identical .the description of one' of the same willsuffice for both. As illustrated, secured adjacent the outer end of theshaft 84 as by a key87 ris-a clutch member 88 having a radiallyvprojecting flange portion 89 disposed within a bore 90 yformed withinthe feed'operating member 12, the latter beingjournaled on bearings 91carried by the frame section 86. A set of clutch disks 92 carried by theclutch member 88 are interleaved with a similar set of disks 93carriedby the feed drum 12. As shown the 'clutch member 88'isperforated, as

at 93a' and through whichperforations longitudinally extending clutchfingers 94'eXtend into contact with one of the'sclutch disks 92, 93.4These lingers are formed integral with a clutch operating-member 95.Keyed, as at 96, to a reduced portion 97 of the shaft 84 is anexternally threaded element 98v which is threadedly engaged by arotatable nut 99 having formed thereon a grasping portion herein in theform of a hand wheel 4100. As shown, interposed between the nut 99 andthe clutch operating member'95 is a ball thrust bearing 101 whichpermits relative rotation between the members 95 and 99. pItj willherein be noted that disposed at each side of the machine frame inlongitudiv nally spaced relation are a plurality offguid- 'ing'sheavesorrolls 102 vrotatable on-vertical axes and these rolls are adapted toguide the feed cables 9 and 10 during the different operations of themachine. It will further be noted that suitable elongated chambers 103and 104V are formed at each side of the feed section 16-between which-the fastjandslow speed transmission means 'is disp'osedand in thesechambers are housedsuitable controller andresistance devices which arerespectively indicated by the terms controller and resistance in Fig. 1ofthe` drawings. l

In the operation of my improved mining machine when utilized inaccordance with longwall system of mining, the cable 10 may be extendedalong the side of the machine as Vindicated by dotted lines inl Fig. 1and attached in a suitable manner to the locking means 6 and the cutterbar swung about its pivot, at a slow or cutting speed under controlofthe friction clutch r2vand 73, from the dotted line position shown inFig. 1 to the `full line position, and the cutter bar then rigidly'locked to the machine frame by the locking means v6. The cableY 10 isthen detachedfrom the bar locking means and exlos tended around certainof the guide sheaves 102 to a point in advance ofv the Vmachine frame,the free end ofl this cable being anchored yin a suitable manner. Theappropriate hand Wheel 100 is then' manipulated by the operator and theclutch 924 and 93 applied, thus causing the drum 12 to Wind in the cableand the machine is fed at a cutting speed under the control of thehandle 8O relative to the face of thecoal. If it is desired to angle themachine during cutting, for instance if a sulphur ball is encountered,the cable 9 isextended in a suitable manner, for instancealong the sideof the machine frame, as indicated by dotted lines in Fig. 1, and aroundthe guide sheave 7v to la suitable anchor.l Thefriction clutchcontrolling the drum 11 may then be applied and the cable 9 yWoundin,`fthus causing the machine frame to be swung' angularly relative tothe face of the coal. .It vWill-be obvious that the bar may be locked attheopposite side of the' machine frame and that thev cables 9 and l()may be extended in any desired manner to obtain any desired operation ofthe machine. During the operation of the machine in accordance withthe'room and pillar system of min- 'ingv it Will be noted-that thecutter bar is lockedV in alinement with the longitudinal axis ofv themachineframeas indicated by dotted lines in Fig. l. The cable 10 is thenextended fromthe feed drumvaround certain of theguide rolls 102 .andaround the front' guide sheave 7 laterally to a point in advance oftheadvancing side of the machine and suitably anchored in position; Thereceding cable 9 is" extended from the other drum laterally of the'machine `frame to a `point'in the rear of the receding side of themachineand likewise suitably anchored in position. The operator thenmanipulates the lhandle8() and the slow speed clutch 72 and 73 is loadedand lthen yupon suitable manipulation of the hand Wheels 100 the drums11 and l1 2 are driven and the cables 9 and 10 governedin a suitablemanner, the cable 10 feedingl the machine While thel cable 9 maintains adesired controlling tension on the rear end of the machine frame, thuspreventing thel cutter bar from being swung out- Wardly away from .thekerf.v It `Will herein be noted that if it is desired to cut in theopposite direction the cables 9 and 10 may be extended in an oppositemanner, the guide sheaveV 7y transposed to the opposite side of themachinefframe, and the cutter bits turned in their respective links.Other operations and advantages of myy machine will be clearly apparentto those skilled in the art.

While I have in this, application specifically described onek form Whichmy invention may assume in-practice, itwvill be understood that `thisform ofthe same 4is shown for purposes of'illustration and that theinvention ,may be modified and embodied in various other forms Withoutdeparting from its spirit or the scope of the appended claims. What Iclaim as new vand desire to-securc by LettersPatent is: n

l, In a mining machine, a motor, and feedplurality of feed operatingmembers rotating means driven by said motor comprising a able onparallel longitudinally extending f ing variable speed transmissionmechanism including a plurality of friction clutches and a terminaldriven element, a plural-ity of feed drums rotatable on parallel axes,-and means including friction. clutches for con-V necting saiddrums to saidterminalelement.

4. In a mining machine, a motor,

feeding means driven by said motor including variable vspeedtransmission mechanism including a plurality of friction clutches and aterminal driven element, a plurality of feed drums rotatable onparallellongitudinally extending horizontal axes-and means including frictionclutches for connecting said drums tosaid terminal element.

5. In a mining machine, a horizontal driving motor having aycasingjslidable on its bottom on the mine bottom, theheightfof the motorsubstantially determining `the height of the motor substantiallydetermining the height of the machine, yand feeding means driven bysaid' motor comprising Va plurality offeed operating members rotatableon parallel longitudinally extending horizontal axes. I

6. In a mining machine, a motorcutting mechanism ,drivenbyzone end ofsaidmotor, and feeding mechanism driven from'thelopposite end of saidmotor and comprising in'- dependently operable feed operating-membersrotatable on parallel axes.

7. `In a mining machine, a motor, cutting mechanism driven'by one endofsaidmotor, and lfeeding mechanism driven from the *opposite end of saidlmotor and comprising-independently operable feed operating I nem` bersrotataole on parallel' longitudinally extending horizontalaxes.

8.. In a i mining machine,a motorhaving a horizontal longitudinallyextending armature shaft, cutting mechanism drivenfrom one end of saidlshaft, and feeding Amechanism driven from the opposite' end of saidshaft and comprising va plurality ofinde- 9. In a mining machine, amotor having a horizontal, longitudinally extending armature shaft,cutting mechanism driven fromV one end of said shaft, and feedingmechanism driven from the opposite end of said Shaft and comprisingaplurality of independently operable feed drums rotatable on parallellongitudinally extending horizontal axes. v v

10. In amining machine, a machine frame adapted to be supportedondilferent parallel plane surfaces, a motor, therheight of whichsubstantially determines the height of the machine,and feeding meansdrivenk from said motor comprising a, plurality of independentlyoperable feed operating members.

@11. AIn a mining machine, a machine frame adapted to be supported ondifferent parallelplane surfaces during cutting, a horizontal motorhaving al casing slidable on its bottom on the-mine bottom, the heightof Whichsubstantially determines the height of the machine, land feedingmeans driven fromvsaid motor comprising a plurality of feed operatingmembers rotatable on parallel axes.

`l2. In a mining machine, a yframe comprising a'motor section, av feedsection,andll a cuttingV section, said motor section being interposedbetween vsaid other sections, and feeding mechanism carried by said feedsection and includingj a plurality of feed drums rotatable on parallelaxes extending longitu-v dinally of the machine.

,13. In a mining machine, 'a motor, and feeding means driven therebycomprising variable speed transmission mechanism including coaxialdriving elements, and a plurality of independently operable feed drumsrotatable `on spaced longitudinally. extending axes parallel with theAaxes of said driving element.

14. In a miningmachine, a motor includ,- ing a horizontal longitudinallyextending armature shaft, vvariable speed transmission means includingclutches disposed coaxially with said shaft, and feed operating membersrotatable on axes parallel With theaxis o f said shaft and adapted tocooperate with flexible feeding means. .n n y y In aI mining .machine, ahorizontal motor having a casing slidable on its bottom on the minebottom, the height of Vvvhichdetermines the height of the machine,cutting mechanism driven by said motor, and feeding` mechanism driven bysaid motor and carried by the end of the machine opposite from saidcutting mechanism and including a plurality of feed drums rotatable onaxes extending longitudinally of the machine.

16. 'In a mining machine, a motor the height of Which determines theheight of the machine, cutting mechanism driven by said motor, andfeeding mechanism driven by said motor and' carried by the end of themachine opposite from said cutting mechanisin and including a pluralityof feed drums rotatable on parallel longitudinally extending horizontalaxes.

17 .Y In la mining machine, a motor, and feeding mechanism driven bysaid .motor comprising separate coaxial fast and slow speed clutches, adriven terminal 'element disposed with its axisin theycentral longi-Vvtudinal vertical vplane of the machine, and

feed drumsl driven by said element rotatable on parallel axes. a Y

18. In a mining machine, a motor, feeding s. mechanismdriven by saidmotor comprising coaxial fast 4and slow speed clutches, afdri'venterminal element disposed with itsaxis in the central longitudinalvertical plane of the machine, feed drums driven by said elementrotatable on parallel axes,

and-a friction' clutch disposed coaxially With'v said terminal elementrotatable on parallel axes in a. common zone transverse. to the drumaxes. i

l s i l a i 2,0. In a mining machine, a motor rand and;

95 by, and a plurality of feed drums driven by lou feeding meansV drivenby said motor comprising `fast and slow speed transmission meanslncluding planetary gearing Whose elements rotate on` axes ,extendinglongitudinally of theV machine, a` terminalu element driven. thereby,`andra plurality of feedy drums' driven by said terminal elementrotatable on parallel longitudinally extending horizontal axes. l l. f ac y21. In a mining machine, a motorand feeding means driven by saidYmotor including variable speed transmission means including planetarygearing, ay terminal element driven thereby, a vplurality of feed drumsdriven by said terminal element and rotatable on parallel axes, and afriction clutch disposedy coaxially with each of said lll) faces onwhich the machine is adapted to be selectively supported during cutting,a horizontal motor within said frame, the height of the motorsubstantially,determining the height of the machine cutting mechanismdriven by said motor, and feeding means for the machne driven by saidmotor comprising f independently operable feed operating membersrotatable on horizontal` axes disposed midway between the top and bottomsurfaces of the machine frame, said members being adapted .to feed saidmachine while supported on either the top or bottom surface of saidframe.

25; In a mining machine, a horizontal motor having a `casing slida-blelon its bottom n the mine bottom, the height of said motor substantiallydetermining the height of the machine, cutting mechanism driven from oneend of said motor, and feedingk means for the machine driven from theoppositeend .of said motor and including independently 'operable feedoperating members adapted tocooperate with fiexible' feeding means, saidfeed operating members being rotatable Von parallel axes.

motor having a casing slidable on its bottom on the mine bottom, theheight of the motor substantially determining the height of the machine,cutting mechanism driven by said motor, and feeding means for themachine driven by said motor comprising la plurality of feed opfn'atingmembers rotatable on parallel yaxes and 'disposed in a 'common Zonetransverse to said axes.

27. In a mining machine, a motor, plural speed transmission means driventhereby including planetary gearing, a plurality of feed operating andcontrolling members `rotating on parallel axes lying inl verticalplanes-extending longitudinally of the machine, and means for connectingsaid members to said 4gearing including friction clutches coaxial withsaid members.

28. In a mining machine, a motor having a 'casing vslidable on itsbottom on the mine bottom, the height of the motor ksubstantially.determining the height of the machine, and feeding means driven by saidmotor including a. plurality of independently'operablefeed `operatingand cont-rolling members chine andequidistant from said axis of oi'ibittil4 movement, and means for connecting saidmembers to said gearing.

80, In a `mining machine, al .machine frame slidable directly on itsbottom on thev minebottom during cutting, a horizontal m'otor in saidframe having'its axis extending longitudinally Vof the machine, cuttingmechanism driven from Oiieend 'of sa-widmetor including a horizontallyswing'able cute ter bar, and feeding mechanism driven from the oppositeend of 'said meter including a.

feed operating member and -atakelup Vmeinba each adapted to @sapernewith essere,

feeding means, said Ymembers being dissaid frame;

3l. In a mining machine, a ,motor having a casing slidable directlyon'its bottom on the mine bottom during cutting, the height ofthe motorsubstantially determining yt-li height' of 'the machine, said motorhaving its armature shaft disposed 'horizontally and longitudinally ofthe inachine'substantially midway lbetweenl the top Eand lboitoi'-n of`said casing, cutting mechanism driven from one end of said motor, andfeedingmechanism driven from the opposite end of said ymotor 26. In amining machine, a ,horizontal and including "a feed operating member4and a take up member each adapted to cooperate with'flexible feedingmeans.

32. Ina mining machinaa v'machine frame having top and ybottom parallelplane sur? faces on which the maehineisadapted to be 'selectivelysupportedl during cutting, a horizontalmotor in said frame its axis.extending longitudinally thereof, cut` ting,l 'mechairiisiny drivenfrom one "end 'of said motor including a lh(jrizontally swingable cutterbar, and feeding means driven from the `opposite end of :said'motorincluding a feed operating member rand .atake mem'- ber each adapted tocooperate ywith flexiblen V feeding means 33. In a combined room andpillar .and longwall mining machine, an relongated inachine frameslidable on its bottom on the mine bottom during cutting and comprisinga cutting section, a motor sectionand affeed section, said 4motorsection bein-g yinterpesede between said cutting 'and 'feed sectiens,pav

horizontal motor disposed in said motor sec-v tion and having its powershaftf'extending longitudinally of the machine, cutting mechposed"wholly within the lateral limits ofk anism driven :from one end of saidmotor 'and including a horizontally swingable Cutter bar pivoted on saidcutting section, said bar being disposable at opposite sides of themachine and lengthwise of the machine during different operationsthereof, and feed-k ing mechanism driven from the opposite' i end ofsaid motor including a feed operating member and a take up membercarried by said feed section, said members each being adapted tocooperate With flexible feeding means.

In testimony whereof I affix my signature.

CHARLES F. OSGOOD.

CERTIFICATE 0F CGRRECTION.

Patent No. 1,664,387. Granted March 27, 1928, to

CHARLES F. OSGOOD.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 4,lines 106 and 107, claim 5, strike out the words "height of the motorsubstantially determining the"; page 5, line 45, claim 13, for the word"element" read "e1ements"`; page 6, line 5, claim 23, ater the word"machine" insert a comme; and that the said Letters Parent sitoud beread with these corrections therein that the same may conform to therecord oi the case in the Patent Office.

Signed and sealed this 29th day of May, A. D. 1928.

M. J. Moore, (Seat) A Acting Commissioner of Patents.

